I just had a look at the uber registration page. I don't think you need any kind of license, at least not for UberPop. The only requirements listed are your own

I just had a look at the uber registration page. I don't think you need any kind of license, at least not for UberPop. The only requirements listed are your own car, age 21, a drivers license and that you're out of the probation period for the license. Cab and Limo drivers at least need a Personenbeförderungsschein, but I'm not certain that UberBlack requires that, the wording is unclear ("gewerbliche Zulassung" relates more to tax and business registration for which the Personenbeförderungsschein might be a requirement or not) https://partners.uber.com/signup/berlin/ https://partners.uber.com/signup/berlin/